Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7738917 | Intercom/wireless door bell for multi-handset telephone system | Gordon Ryley, Ralph Tischler, Allan Chi-Yun Wong, Stephen Kropp | 2010-06-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7738917 | Intercom/wireless door bell for multi-handset telephone system | Gordon Ryley, Ralph Tischler, Allan Chi-Yun Wong, Stephen Kropp | 2010-06-15 |